The DocuSign connector allows you to access the DocuSign REST API through the WSO2 ESB. DocuSign is the most secure and globally trusted platform for adding legally binding signatures, forms, and document workflows to your web, mobile, or desktop app or service.
mvn clean install
You can create a third party connector and publish in WSO2 Store.
https://docs.wso2.com/display/ESBCONNECTORS/Creating+and+Publishing+a+Third+Party+Connector